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Long-term Debt - Narrative (Details)																				12 Months Ended
	Dec. 27, 2024 USD ($)	Nov. 18, 2024 USD ($)	Jul. 25, 2024 USD ($) option	Jun. 13, 2024 USD ($)	Jun. 11, 2024 USD ($)	May 01, 2024 USD ($)	Apr. 16, 2024 USD ($)	Mar. 15, 2024 USD ($)	Dec. 28, 2023 USD ($)	Dec. 22, 2023 USD ($)	Dec. 18, 2023 USD ($)	Dec. 12, 2023 USD ($)	Dec. 01, 2023 USD ($)	Oct. 31, 2023 USD ($)	Aug. 31, 2023 USD ($)	Aug. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 15, 2023 USD ($)	Feb. 17, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 23, 2024 USD ($)	Jun. 30, 2024 USD ($)
Debt Instrument [Line Items]
Proceeds from the revolving credit facility																				$ 0	$ 0	$ 80,000,000
Net debt issuance costs																				57,000,000	65,000,000
Capital expenditures																				188,000,000	157,000,000
Property, plant and equipment																				9,944,000,000	9,526,000,000
Contributions from noncontrolling interests, net of distributions																				1,493,000,000	1,028,000,000	$ 60,000,000
Long-term debt																				7,235,000,000	8,099,000,000
Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt												$ 254,000,000
Proceeds from the revolving credit facility												165,000,000
Aggregate principal amount repurchased												72,000,000
Remaining balance to distribute												55,000,000
Proceeds from debt												27,000,000
Payments for other fees	$ 4,000,000											4,000,000
Net debt issuance costs												4,000,000
Capital expenditures												$ 3,000,000
Property, plant and equipment																				82,000,000
Expected contributions upon substantial completion	152,000,000
Cedro Hill Repowering | Clearway Renew LLC
Debt Instrument [Line Items]
Remaining balance to distribute	26,000,000
Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt		$ 125,000,000
Unamortized debt issuance costs		1,000,000
Rosamond Central Solar Project
Debt Instrument [Line Items]
Long-term debt																								$ 77,000,000
Rosamond Central Solar Project | Rosie Central BESS
Debt Instrument [Line Items]
Repayment of partial loan amount													$ 70,000,000
Current assets, receivables													279,000,000
Rosamond Central Solar Project | Tax Equity Investors | Rosie Central BESS
Debt Instrument [Line Items]
Current assets, receivables													215,000,000
Rosie Class B LLC, due 2029
Debt Instrument [Line Items]
Long-term debt				$ 21,000,000
Payments for other fees				11,000,000
Rosie Class B LLC, due 2029 | CEG
Debt Instrument [Line Items]
Expected contributions upon substantial completion				56,000,000
Contributions from noncontrolling interests, net of distributions				39,000,000
Rosie Class B LLC, due 2029 | Cash Equity Investor
Debt Instrument [Line Items]
Remaining balance to distribute				44,000,000
NIMH Solar, due 2024
Debt Instrument [Line Items]
Aggregate principal amount repurchased					$ 146,000,000
Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Long-term debt						$ 75,000,000
Victory Pass and Arica, due 2024 | CEG
Debt Instrument [Line Items]
Expected contributions upon substantial completion						52,000,000
Contributions from noncontrolling interests, net of distributions						103,000,000
Victory Pass and Arica, due 2024 | Cash Equity Investor
Debt Instrument [Line Items]
Expected contributions upon substantial completion						347,000,000
Victory Pass and Arica, due 2024 | Sponsor Equity Bridge Loan
Debt Instrument [Line Items]
Long-term debt														$ 483,000,000
Victory Pass and Arica, due 2024 | Tax Equity Bridge Loan
Debt Instrument [Line Items]
Long-term debt														385,000,000
Victory Pass and Arica, due 2024 | Tax Equity Investors
Debt Instrument [Line Items]
Expected contributions upon substantial completion						410,000,000
Long-term debt, additions																				62,000,000	22,000,000
Victory Pass and Arica
Debt Instrument [Line Items]
Long-term debt														864,000,000
Payments for other fees						18,000,000
Unamortized debt issuance costs														4,000,000
Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt							$ 309,000,000
Payments for other fees							6,000,000
Unamortized debt issuance costs							3,000,000
Construction completion reserves							16,000,000
Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt									$ 349,000,000
Unamortized debt issuance costs									1,000,000
Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt									18,000,000
Payments for other fees									5,000,000
Long-term debt, additions									12,000,000
Texas Solar Nova 1 | CEG
Debt Instrument [Line Items]
Remaining balance to distribute									9,000,000
Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt								$ 19,000,000
Payments for other fees								4,000,000
Unamortized debt issuance costs								1,000,000
Texas Solar Nova 2 | CEG
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions								9,000,000
Daggett 2 Drop Down
Debt Instrument [Line Items]
Long-term debt																$ 308,000,000
Payments for other fees										$ 1,000,000
Expected contributions upon substantial completion										202,000,000
Unamortized debt issuance costs																3,000,000
Daggett 2 Drop Down | CEG
Debt Instrument [Line Items]
Remaining balance to distribute										91,000,000
Daggett 2 Drop Down | Tax Equity Investors
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions										120,000,000
Daggett 3 Drop Down
Debt Instrument [Line Items]
Long-term debt																			$ 480,000,000
Payments for other fees													7,000,000
Expected contributions upon substantial completion													252,000,000
Unamortized debt issuance costs																			5,000,000
Daggett 3 Drop Down | CEG
Debt Instrument [Line Items]
Remaining balance to distribute													45,000,000
Payments for other fees																			54,000,000
Daggett 3 Drop Down | Sponsor Equity Bridge Loan
Debt Instrument [Line Items]
Payments for other fees																			8,000,000
Daggett 3 Drop Down | Tax Equity Investors
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions													69,000,000
Construction Loans | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt	38,000,000
Construction loan proceeds	54,000,000
Long-term debt, additions	99,000,000																			88,000,000
Construction Loans | Rosamond Central Solar Project
Debt Instrument [Line Items]
Long-term debt																	$ 115,000,000
Construction Loans | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt							112,000,000
Construction Loans | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt									90,000,000
Construction Loans | Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt, additions									102,000,000
Construction Loans | Daggett 2 Drop Down
Debt Instrument [Line Items]
Long-term debt										36,000,000						107,000,000
Construction loan proceeds										10,000,000
Long-term debt, additions										156,000,000					$ 49,000,000
Construction Loans | Daggett 3 Drop Down
Debt Instrument [Line Items]
Long-term debt													40,000,000						181,000,000
Long-term debt, additions											$ 36,000,000		217,000,000
Tax Equity Bridge Loan | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt	138,000,000
Tax Equity Bridge Loan | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt		49,000,000					49,000,000
Long-term debt, additions							24,000,000
Tax Equity Bridge Loan | Rosamond Central Solar Project
Debt Instrument [Line Items]
Long-term debt																	$ 188,000,000
Tax Equity Bridge Loan | Rosie Class B LLC, due 2029
Debt Instrument [Line Items]
Long-term debt				186,000,000
Tax Equity Bridge Loan | Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Long-term debt						468,000,000
Tax Equity Bridge Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt							109,000,000
Tax Equity Bridge Loan | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt									151,000,000
Tax Equity Bridge Loan | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt								115,000,000
Tax Equity Bridge Loan | Daggett 2 Drop Down
Debt Instrument [Line Items]
Long-term debt										$ 204,000,000						$ 204,000,000
Tax Equity Bridge Loan | Daggett 3 Drop Down
Debt Instrument [Line Items]
Long-term debt													229,000,000						229,000,000
Cash Equity Bridge Loan | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt	16,000,000
Cash Equity Bridge Loan | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt		$ 77,000,000
Cash Equity Bridge Loan | Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Aggregate principal amount repurchased						351,000,000
Cash Equity Bridge Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt							91,000,000
Construction Invoices | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt	$ 11,000,000
Sponsor Equity Loan | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt							77,000,000
Partial payment of long term debt							7,000,000
Tax Equity Investors | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt							18,000,000
Tax Equity Investors | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt							108,000,000
Tax Equity Investors | Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt									148,000,000
Tax Equity Investors | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt								130,000,000
Term Loan | Capistrano Portfolio Holdco
Debt Instrument [Line Items]
Asset acquisition, issuance cost																							$ 121,000,000
Term Loan | Broken Bow and Crofton Bluffs
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions																				63,000,000
Term Loan | NIMH Solar, due 2024
Debt Instrument [Line Items]
Long-term debt					137,000,000
Term Loan | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt								$ 80,000,000
Letter of Credit | Capistrano Portfolio Holdco
Debt Instrument [Line Items]
Asset acquisition, issuance cost																							$ 42,000,000
Letter of Credit | Natural Gas CA Holdco LLC LC Facility
Debt Instrument [Line Items]
Asset acquisition, long-term debt, outstanding			$ 200,000,000
Debt instrument, term			3 years
Debt instrument, number of additional extension option | option			2
Letter of Credit | Natural Gas CA Holdco LLC LC Facility | Minimum
Debt Instrument [Line Items]
Debt instrument, extension term			1 year
Letter of Credit | NIMH Solar, due 2024
Debt Instrument [Line Items]
Long-term debt					$ 17,000,000
Construction Loan | Rosie Class B LLC, due 2029
Debt Instrument [Line Items]
Long-term debt, additions				115,000,000																$ 30,000,000	271,000,000
Construction Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt, additions							110,000,000
Partial payment of long term debt							$ 2,000,000
Sponsor Equity Bridge Loan | Victory Pass and Arica
Debt Instrument [Line Items]
Partial payment of long term debt														$ 133,000,000
Sponsor Equity Bridge Loan | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt									$ 109,000,000
Sponsor Equity Bridge Loan | Daggett 3 Drop Down
Debt Instrument [Line Items]
Long-term debt																			$ 75,000,000
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate																		0.10%		1.50%
Long-term debt																				$ 0	$ 0
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Bridge credit agreement, borrowing amount																		$ 700,000,000
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Bridge credit agreement, borrowing amount																		$ 594,000,000
Rosamond Central Solar Project | Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Bridge credit agreement, borrowing amount																								$ 41,000,000
Clearway Renew LLC | Rosamond Central Solar Project | Rosie Central BESS
Debt Instrument [Line Items]
Current assets, receivables				184,000,000									$ 64,000,000
Clearway Renew LLC | Rosie Class B LLC, due 2029
Debt Instrument [Line Items]
Long-term debt				$ 279,000,000
Clearway Renew LLC | Victory Pass and Arica, due 2024 | VP-Arica TargetCo LLC
Debt Instrument [Line Items]
Payments to acquire productive assets						$ 165,000,000

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